Question

Explain the method scientists use to study how earths atmosphere and climate have changed during the past million years

Answer 1

Scientists study Earth’s climate and the ways that it changes in a variety of different ways, using satellite, instrumental, historical, and environmental records. One challenge of using satellite and instrumental data is that their lifespans have been rather short when compared to Earth’s life. The satellite record is only a little over 20 years old and the instrumental record only extends back into the 19th century. Both of these records can be too short to study certain climate processes that occur over hundreds to thousands of years.

Answer 2

The study that involves the research over earth atmosphere and climate changes in the past is known as the paleoclimatology. The study mainly concentrate over the past climates of Earth and atmospheric changes that took place in the past centuries.

There are many special methods which are used by the Paleoclimatologists to study the past climate of earth. They are

• Studying ice core samples
• Observing remnant glacial lands
• Studying the sediments of ocean floor
• Studying fossils.